dmitry-lyutenko’s gists

dmitry-lyutenko / doh

Created August 9, 2022 19:28 — forked from M0r13n/doh

Setup Cloudflare as a DoH (DNS over HTTPS) resolver on Mikrotik devices (RouterOS v7.0.2+)

	# Temporarily add a normal upstream DNS resolver
	/ip dns set servers=1.1.1.1,1.0.0.1

	# CA certificates extracted from Mozilla
	/tool fetch url=https://curl.se/ca/cacert.pem

	# Import the downloaded ca-store (127 certificates)
	/certificate import file-name=cacert.pem passphrase=""

	# Set the DoH resolver to cloudflare

dmitry-lyutenko / dinv.sh

Created May 31, 2020 19:17

dinamic inventory

dmitry-lyutenko / bash.sh

Last active April 29, 2020 09:31

	#!/bin/bash

	# Waiting redis
	`2>/dev/null echo "" > /dev/tcp/$REDIS_HOST/6379 \|\| exit 1`
	status=$?
	counter=0
	while [ $status -gt 0 ] && [ $counter -lt 10 ]; do
	echo Waiting redis
	sleep 2
	`2>/dev/null echo "" > /dev/tcp/$REDIS_HOST/6379 \|\| exit 1`

dmitry-lyutenko / sample.sh

Created November 28, 2019 15:36

sample_command

	export mysql_root_password="_SeCretPass2019_"
	export mysql_admin_username=admin
	export mysql_admin_password="_AdminPassword2"
	export cluster_name="otus_InnoDB"

	# Begin: For Each node
	export mysql_root_password="_SeCretPass2019_" && \
	export mysql_temp_password=$(awk '$0 ~ "temporary password" {print $13}' /var/log/mysqld.log)

	cat >> /root/.my.cnf <<EOF

dmitry-lyutenko / async_sample.yml

Last active September 10, 2019 09:02

Ansible. Async task waiting.

	---
	- hosts: all
	become: yes
	gather_facts: no
	tasks:
	- name: "Long time task (async)"
	shell: echo "{{ item }} - $(date) - before" >> /tmp/out.log && sleep $(date +%S) && echo "{{ item }} - $(date) - after" >> /tmp/out.log
	async: 1000
	poll: 0
	register: tasks_waiting

dmitry-lyutenko / Vagrantfile

Created July 12, 2019 06:45

	INTENT_TYPE="internal-net"
	MACHINES = {
	:"gl1" => {
	:box_name => "centos/7",
	:net => [
	{ip: '10.10.10.11', adapter: 2, netmask: "255.255.255.0"},
	{ip: '10.12.12.1', adapter: 3, netmask: "255.255.255.0", virtualbox__intnet: INTENT_TYPE},
	],
	:cpus => 1,
	:memory => 256,

dmitry-lyutenko / bash_script_with_slack_notify.sh

Created June 26, 2019 07:37

Bash script with Slack notify after work ended

	#!/bin/bash

	trap_event() {
	res=$?
	icon=":heavy_check_mark:"
	if [ $res -ne 0 ]; then
	icon=":warning:"
	fi
	app_url='https://hooks.slack.com/services/<app_secret>'
	payload="payload={\"text\": \"Task ended. Exit code: '"$res"')\", \"icon_emoji\": \"$icon\"}"

dmitry-lyutenko / Vagrantfile

Created June 11, 2019 14:41

kuber-cluster with three nodes and one master for vagrant with libvirt

dmitry-lyutenko / kernel.yml

Created May 24, 2019 12:50

Ansible playbook template for update CentOS kernel

	---

	- name: install packages
	yum:
	name: "http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm"
	state: latest

	- name: update
	yum:
	name: "*"

dmitry-lyutenko / test_login.sh

Created April 7, 2019 18:28

Dmitriy Lyutenko dmitry-lyutenko